In assessing carpeting, which factor is NOT related to its structural integrity?

Color fastness refers to the ability of the carpet's dye to resist fading or bleeding when exposed to environmental factors such as sunlight, moisture, or cleaning agents. While color fastness is crucial for maintaining the aesthetic quality and appearance of the carpet over time, it does not have a direct impact on the structural integrity of the carpet itself.

In contrast, factors like yarn twist, density, and the number of cords per square centimeter are directly related to the physical properties that contribute to how well the carpet can withstand wear and tear. Yarn twist affects the tightness and durability of the fibers, which can influence how well the carpet resists crushing and matting. Density, which indicates how closely the fibers are packed, directly correlates to the carpet’s sturdiness and ability to handle foot traffic. The number of cords per square centimeter gives an idea of fiber distribution and contributes to the overall durability and performance of the carpet.

By understanding these distinctions, it becomes clear that while color fastness is essential for the carpet's visual longevity, it does not compromise or enhance the structural integrity, making it the factor that is least related to the overall durability and strength of the carpeting.